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公开(公告)号：US2925493A
公开(公告)日：1960-02-16
申请号：US61886556
申请日：1956-10-29
Applicant: CUTLER HAMMER INC
Inventor： FISCHER PAUL M , FLATTUM LEON H
IPC: G05D15/01
CPC classification number: G05D15/01
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